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Effects of Dietary Lipid Levels on Growth Performance, Whole Body Composition and Digestive Enzyme Activity of Juvenile Bighead Carp (Aristichthys nobilis)

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dc.contributor.author Cai, Fangfang
dc.contributor.author Wang, Yan
dc.contributor.author Hu, Xiangin
dc.contributor.author Huang, Feng
dc.contributor.author Wang, Fucheng
dc.contributor.author Liu, Hongming
dc.date.accessioned 2021-03-22T20:20:50Z
dc.date.available 2021-03-22T20:20:50Z
dc.date.issued 2020
dc.identifier.issn 0792-156X
dc.identifier.uri http://hdl.handle.net/10524/63810
dc.description.abstract A 60-day study was conducted to investigate the effects of dietary lipid levels on growth, whole body composition and digestive enzyme activity of bighead carp (Aristichthys nobilis) with initial average weight (3.28 ± 0.11) g. Six isonitrogenous (40.25% crude protein) diets were formulated to contain graded contents of lipid (4.72%, 7.31%, 11.02%, 14.90%, 17.14%, and 19.37%) using corn oil and soybean oil as main lipid source. The results showed that the maximum weight gain (WG) and specific growth rate (SGR) were recorded at 11.02% dietary lipid level. Significant alterations were demonstrated on whole-body composition by different dietary lipid levels. Crude lipid content of whole body increased in parallel with the increase of dietary lipid levels. Fish fed diet with 11.02% lipid level showed lowest moisture and ash content. The activities of amylase and protease initially increased before decreasing, and the highest activities of amylase and protease were obtained in individuals fed the 11.02% lipid content diet. There were no significant differences in condition factor (CF) and hepatosomatic index (HSI) (P >0.05). Based on the polynomial regression analysis of WG and SGR, this study suggested that the optimum dietary lipid requirement of juvenile bighead carp was estimated to be 7.77%~8.31%.
dc.format.extent 10 pages
dc.relation.ispartof The Israeli Journal of Aquaculture - Bamidgeh
dc.subject lipid level
dc.subject bighead carp
dc.subject growth performance
dc.subject fish body composition
dc.subject digestive enzyme
dc.subject aristichthys nobilis
dc.subject weight gain
dc.subject sgr
dc.subject juvenile
dc.title Effects of Dietary Lipid Levels on Growth Performance, Whole Body Composition and Digestive Enzyme Activity of Juvenile Bighead Carp (Aristichthys nobilis)
dc.type Article
dc.type.dcmi Text
prism.volume 72
dc.identifier.doi https://doi.org/10.46989/001c.21646
Appears in Collections: Volume 72, 2020


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